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Pieter (Jop) WOLTJER

Postdoc Economic History – University of Groningen

Author

P.J. Woltjer

I am a post-doctoral researcher at the Groningen Growth and Development Centre. As an economic-historian, I am interested in topics ranging from the study of productivity growth in the United States, the diffusion of technology in Europe, to the impact of international trade on development in Africa. The aim of this blog is to provide access to my published articles and working papers, as well as the unpublished datasets, source descriptions and statistical and analytical code underlying my research.

Article: Is Egypt Really More Productive than the United States?

The Data behind the Penn World Table

ABSTRACT: A new feature in recent versions of the Penn World Table (PWT) is data on comparative levels of total factor productivity (TFP) across countries. TFP is defined as the efficiency with which inputs are transformed into outputs, and differences across countries can be due to factors such as better technology or better resource allocation. Yet, surprisingly, in PWT version 10.0, a number of low-income countries have a TFP level well above that of the United States. Continue reading “Article: Is Egypt Really More Productive than the United States?”

Working Paper: Long-run World Input-Output Database

Version 1.0 Sources and Methods

ABSTRACT: In this paper we outline the construction of the WIOD for a longer period, namely from 1965 onwards, hence the name Long-run WIOD (LR-WIOD). This encompasses the period of rapid growth in the world economy Continue reading “Working Paper: Long-run World Input-Output Database”

Working Paper: Inconsistencies in Comparing Relative Prices Over Time

Patterns and Facts

ABSTRACT: Purchasing power parities (PPPs) aim to measure relative price levels across countries, like inflation aims to measure relative price levels over time. Ideally, the change in PPPs over time should be consistent with relative inflation, Continue reading “Working Paper: Inconsistencies in Comparing Relative Prices Over Time”

Working Paper: Jobs in Global Value Chains

New Evidence for Four African Countries in International Perspective

ABSTRACT: What is the potential for job growth in Africa under participation in global value chains (GVCs)? In this study the concept of GVC jobs is introduced which tracks the number of jobs associated with GVC production of goods. A novel decomposition approach is used to account for GVC jobs by three proximate sources: global demand for final goods, a country’s GVC competitiveness (measured as the country’s share in serving global demand) and technology (workers needed per unit of output).

Continue reading “Working Paper: Jobs in Global Value Chains”

Working Paper: The Economic Transformation Database

ABSTRACT: This note introduces the GGDC/UNU-WIDER Economic Transformation Database (ETD), which provides time series of employment and real and nominal value added by 12 sectors in 51 countries for the period 1990–2018. The ETD includes 20 Asian, 9 Latin American, 4 Middle-East and North African, and 18 sub-Saharan African countries at varying levels of economic development.

Continue reading “Working Paper: The Economic Transformation Database”

Column: Manufacturing Hope in Africa

On March 20th, The Economist featured research by the GGDC and UNU-WIDER on the manufacturing renaissance in Africa. A key finding is that the share of people working in manufacturing in sub-Saharan Africa has risen from 7.2% of the total in 2010 to 8.4%.

Continue reading “Column: Manufacturing Hope in Africa”

Working Paper: What is new in PWT 10.0?

ABSTRACT: The release of the Penn World Table version 10.0 is the fifth release since the switch to the ‘Next Generation of the Penn World Table’, see Feenstra, Inklaar and Timmer (2015). PWT 10.0 is a database with information on relative levels of income, output, input and productivity, covering 183 countries between 1950 and 2019. Continue reading “Working Paper: What is new in PWT 10.0?”

Article: Growth Accounting in Economic History

Finding, Lessons and New Directions

ABSTRACT: There is now a large volume of growth accounting estimates covering the long run experience of advanced countries. However, most of the studies in economic history are not based on state-of-the-art methods. There is a trade-off between maintaining international comparability and achieving the best results for individual countries. A one-size-fits-all approach Continue reading “Article: Growth Accounting in Economic History”

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